Priscilla, The Crossbreed

Defender, Shroud, First strike
Wither (This deals damage to creatures in the
form of -1/-1 counters).
If an opponent attacks you whilst you control Priscilla, you can attack that opponent as if
Priscilla didn't have defender.
When Priscilla dies, the opponent that killed Priscilla creates a Priscilla's Dagger token.